CN104864659B - Cooling water energy saving circulating system - Google Patents
Cooling water energy saving circulating system Download PDFInfo
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- CN104864659B CN104864659B CN201510259938.XA CN201510259938A CN104864659B CN 104864659 B CN104864659 B CN 104864659B CN 201510259938 A CN201510259938 A CN 201510259938A CN 104864659 B CN104864659 B CN 104864659B
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- Prior art keywords
- hot
- under reduced
- reduced pressure
- evaporated under
- water
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D1/00—Devices using naturally cold air or cold water
- F25D1/02—Devices using naturally cold air or cold water using naturally cold water, e.g. household tap water
Abstract
The invention discloses cooling water energy saving circulating system, vacuum evaporator, hot-tub, thermal source, the first primary reduction vaporization device, at least one intermediate relief vaporising device and the first final stage including being sequentially communicated with pipeline are evaporated under reduced pressure device, and the first final stage is evaporated under reduced pressure on water at low temperature outlet to the pipeline between hot-tub and thermal source of device；The steam (vapor) outlet of intermediate relief vaporising device has been sequentially communicated first level hot-tub, the second primary device, the second final stage of being evaporated under reduced pressure and has been evaporated under reduced pressure device with pipeline, and the second final stage is evaporated under reduced pressure the water at low temperature outlet of device to vacuum evaporator；First final stage is evaporated under reduced pressure device has second subprime hot-tub with pipeline communication, and the hot water outlet of the second subprime hot-tub is communicated to first level hot-tub.The steam that the present invention is obtained after being evaporated under reduced pressure continues to heat cooling water backwater, reaches the recovery low-temperature cooling water latent heat of vaporization and saves cooling-water consumption.
Description
Technical field
The present invention relates to cooling water technology, more particularly to cooling water energy saving circulating system.
Background technology
Cooling water system is divided into once-through cooling water system and recirculating cooling water system.If cooling water is lowered the temperature to production equipment
It is afterwards the system of discharge, now cooling water claims once-through cooling water system only with once；If making the cooling water having warmed up flow through cooling
Equipment and water temperature is returned drop, then the system reused with pumped back production equipment claims recirculating cooling water system or cooling water to follow
Loop systems.
Recirculating cooling water system and two kinds of enfeoffment enclosed and open type：
1. closed circulating cooling system is also called Enclosed Type Circulating Cooling Water System.In this process, cooling water
Temperature is raised and turns into hot water, carries out cooling hot water with other cooling mediums in another heat transmission equipment, is followed after cooling
Ring is used.Inclosed recirculated cooling water system is made up of two parts：One is the cyclic part of cooling water, two be cooling water is carried out it is cold
But device part.Although closed water-saving, influenceed, than larger, part water flowing can be caused bad, during winter by weather
Even there is the possibility that water route is frozen；And in summer, because weather overheats influence cooling effect, especially Cooling Water From Thermal Power Plants again,
If temperature is too high, generating efficiency will be directly affected.
2. it is not to emit immediately after cooling water in Open recirling cooling water system, but withdraws circulation again
With.Water cools down by cooling tower to carry out again, thus cooling water in cyclic process will and air contact, part water exists
Can constantly by evaporation loss during by cooling tower.Therefore in open type circulation, the consumption of cooling water is than larger.
Cooling water accounts for 70% of industrial water or so, and the larger ratio of open type circulation accounting.And cool down
No matter water system is closed or open type, all to substantial amounts of waste heat is discharged in environment, thermal pollution is caused.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide cooling water energy saving circulating system, by subtracting
The steam obtained after pressure evaporation continues to heat cooling water backwater, reaches the recovery low-temperature cooling water latent heat of vaporization and saves cooling water and disappear
Consumption.
The purpose of the present invention is realized using following technical scheme：
Cooling water energy saving circulating system, including the vacuum evaporation for being passed through cooling water backwater being sequentially communicated with pipeline is filled
Put, the hot-tub for being passed through cooling water backwater, thermal source, first primary device, the evaporation of at least one intermediate relief be evaporated under reduced pressure
Device and the first final stage are evaporated under reduced pressure device, and the first final stage is evaporated under reduced pressure the water at low temperature outlet of device to hot-tub and thermal source
Between pipeline on；At the beginning of the steam (vapor) outlet of intermediate relief vaporising device has been sequentially communicated first level hot-tub, second with pipeline
Level is evaporated under reduced pressure device, the second final stage and device is evaporated under reduced pressure, and the second final stage is evaporated under reduced pressure the water at low temperature outlet of device to true
Empty vaporising device；First final stage is evaporated under reduced pressure device has second subprime hot-tub with pipeline communication, the second subprime hot-tub
Hot water outlet is communicated to first level hot-tub；The hot water outlet of hot-tub is with pipeline communication to second subprime hot-tub；Vacuum
The low temperature water out of vaporising device has the water cooling pond for supplying cooling water with pipeline communication；The hot water of first level hot-tub goes out
Mouth has third time level hot-tub with pipeline communication, and the first primary steam (vapor) outlet that device is evaporated under reduced pressure passes through pipeline with this for the third time
Level hot-tub connection.
Preferably, the hot water outlet of hot-tub has outdoor heat exchanger or hot water electric generating apparatus or funnel-shaped hair with pipeline communication
Electric installation.
Preferably, the first final stage is evaporated under reduced pressure the low temperature water out of device by the water process system for generating deionized water
Hot-tub is communicated to after system.
Preferably, the steam (vapor) outlet of intermediate relief vaporising device also with pipeline communication to the first final stage be evaporated under reduced pressure device,
Second final stage is evaporated under reduced pressure device and vacuum evaporator.Preferably, the first primary device, intermediate relief evaporation of being evaporated under reduced pressure is filled
Put, the first final stage is evaporated under reduced pressure device, the second primary device that is evaporated under reduced pressure is flash tank, the second final stage is evaporated under reduced pressure device to expand
Hold tank.
Preferably, flash tank or dilatation tank include tank body and the steam (vapor) outlet, hot water inlet, the pressure that are arranged on tank body
Sensor and the delivery port of separation water outlet, hot water inlet's first quarter stream device are communicated in tank body.
Compared to existing technology, the beneficial effects of the present invention are：
The present invention is first cold with what can be continuing with by the isolated latent heat steam of cooling water backwater by vacuum evaporator
But water, to make full use of the latent heat of cooling water backwater, it is to avoid waste heat waste, or even avoids thermal pollution, through be passed through thermal source first
After heating passage, be evaporated under reduced pressure under the staged evaporation centrifugation that device is formed primary, middle, final stage, through thermal source plus
The hot water of heat by the isolated different ladder high steam of stepped evaporation and water, i.e. different pressures, the water of different temperatures, for
Different use demands；The high steam for obtaining herein forms second and heats passage, continues to heat first, second level hot-tub
Hot water, the high-temperature water for obtaining carries out the stepped second primary, reduction vaporization of the second final stage, and the steam for obtaining continues to heat
Hot water, to obtain different ladder hot water；Also can export defeated through the first primary reduction vaporization device by third time level hot-tub
Go out the high-temperature-hot-water of high pressure steam heating, so that realize neatly obtaining the steam of different temperatures hot water and different pressures, it is maximum
Change make use of the latent heat of cooling water backwater, while also making the loss of cooling water minimize.
Brief description of the drawings
Fig. 1 is the connection diagram of cooling water energy saving circulating system of the present invention；
Fig. 2 is the structural representation of flash tank of the present invention or dilatation tank.
In figure：1st, vacuum evaporator；2nd, hot-tub；3rd, the first primary reduction vaporization device；4th, intermediate relief evaporation dress
Put；5th, the first final stage is evaporated under reduced pressure device；6th, first level hot-tub；7th, the second primary reduction vaporization device；8th, the second final stage
Device is evaporated under reduced pressure；9th, second subprime hot-tub；10th, water cooling pond；11st, third time level hot-tub；12nd, outdoor heat exchanger；13rd, tank
Body；14th, steam (vapor) outlet；15th, hot water inlet；16th, pressure sensor；17th, delivery port；18th, throttling arrangement；19th, thermal source；20th,
One heating passage；21st, the second heating passage.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further：
Cooling water energy saving circulating system as shown in Figure 1, including with pipeline be sequentially communicated for being passed through cooling water backwater
Vacuum evaporator 1, the primary device 3, at least of being evaporated under reduced pressure of the hot-tub 2 for being passed through cooling water backwater, thermal source 19, first
One final stage of intermediate relief vaporising device 4 and first is evaporated under reduced pressure device 5, and the water at low temperature that the first final stage is evaporated under reduced pressure device 5 goes out
Mouth is communicated on the pipeline between hot-tub 2 and thermal source 19；The steam (vapor) outlet 14 of intermediate relief vaporising device 4 is connected successively with pipeline
It is connected with first primary device 7, the second final stage of being evaporated under reduced pressure of level hot-tub 6, second and device 8, the decompression of the second final stage is evaporated under reduced pressure
The water at low temperature outlet of vaporising device 8 is to vacuum evaporator 1；First final stage is evaporated under reduced pressure device 5 has the with pipeline communication
Secondary stage hot-tub 9, the hot water outlet of the second subprime hot-tub 9 is communicated to first level hot-tub 6；The hot water of hot-tub 2
Outlet is with pipeline communication to second subprime hot-tub 9；The low temperature water out of vacuum evaporator 1 has for supplying with pipeline communication
The water cooling pond 10 of cooling water；At the beginning of first hot water outlet of level hot-tub 6 has third time level hot-tub 11, first with pipeline communication
The steam (vapor) outlet 14 that level is evaporated under reduced pressure device 3 is connected by pipeline with the third time level hot-tub 11.
By vacuum evaporator 1 first by the isolated latent heat steam of cooling water backwater and the cooling water that can be continuing with,
To make full use of the latent heat of cooling water backwater, it is to avoid waste heat is wasted, or even avoids thermal pollution, through the first heating for being passed through thermal source 19
After passage 20, under primary, the staged evaporation centrifugation that device formation is evaporated under reduced pressure of middle, final stage, add through thermal source 19
The hot water of heat by the isolated different ladder high steam of stepped evaporation and water, i.e. different pressures, the water of different temperatures, for
Different use demands；The high steam for obtaining herein forms second and heats passage 21, continues to heat first, second level hot water
The hot water in pond 9, the high-temperature water for obtaining carries out the stepped second primary, reduction vaporization of the second final stage, and the steam for obtaining continues
Heat hot water, to obtain different ladder hot water；Also can be exported through the first primary reduction vaporization by third time level hot-tub 11
Device 3 exports the high-temperature-hot-water of high pressure steam heating, so as to realize neatly obtaining the steaming of different temperatures hot water and different pressures
Vapour, has maximally utilized the latent heat of cooling water backwater, while also making the loss of cooling water minimize.First heating passage 20
Water supply is initially that the water at low temperature that device 5 formed is evaporated under reduced pressure by the final stage of hot-tub 2 and first to mix；If scene is without use
In vacuumizing high steam with adherence pressure, it is necessary to heating cooling water backwater produces high steam at the very start.It is available
The hot water in the first heat hot water pond of high steam in such as power plant, afterwards, with the formation of hot water at higher temperature, no longer from hot-tub 2
Diversion is heated, but water at higher temperature is drawn in switching and the first final stage is evaporated under reduced pressure the water at low temperature mixing of device 5, is finally sent to heat
Heat in source 19.After stepped reduction vaporization is formed, replaced by the second subprime hot-tub 9 of high temperature or hot water at higher temperature
The second subprime hot-tub 9, so as to obtain more hot water.The cooling water of the second heating heating of passage 21, it is primary by second
Device 7, the second final stage is evaporated under reduced pressure to be evaporated under reduced pressure in the water at low temperature feeding vacuum evaporator 1 produced after device 8, isolates
Cold water feeding water cooling pond 10 begins to cool down circulation.First heating passage 20 is most initially the water in heat hot water pond 2, than hot-tub
After 2 temperature hot-tubs at different levels high are formed, change and send the water of temperature hot-tubs at different levels high to be heated to thermal source 19, faster to obtain hot water
With the energy input for saving the thermal source 19 for needing.
Certainly, the second primary final stage of device 7 and second that is evaporated under reduced pressure is evaporated under reduced pressure between device 8, it is also possible to form ladder
The reduction vaporization flow of formula.
If desired be high steam, the hot water of the highest temperature of the first heating heating of passage 20, and the first primary decompression
The steam that vaporising device 3 is obtained after being evaporated under reduced pressure, directly as output steam；If desired be hot water if, the steam adds
Heat second heats the hot water of the middle highest temperature of the output of passage 21, so as to obtain required hot water.The high steam that obtains or
High-temperature water, can heat to boiler feedwater；The generating equipments such as steam turbine can also be connect；Can also be heated to low boiling working fluid；
May provide the user with required steam or hot water.
Wherein, hot-tubs at different levels are closing pond；Vacuum evaporator 1 can be oil-sealed rotary pump or injection vacuum
The absorption vacuum evaporator 1 such as pump or both combination vacuum tank for drawing gas and being formed, or lithium bromide.Cooling water
Backwater is sprayed into and taken out in the vacuum tank of vacuum, isolates low temperature cold water and steam, and low-temperature cold water feeds water as cooling water
Water cooling pond 10 is flowed into, vapor is used for heating cooling water backwater and flows into hot-tub 2.The temperature of the low-temperature cold water isolated should be use up
May be lower, the temperature and traffic requirement of cooling water can be met, while making the pressure of discharge vapor as higher as possible, it is beneficial to
The follow-up cooling water backwater of heating.
Thermal source 19 can pick up from boiler, or economizer exit high-temperature-hot-water, or the high steam after superheater,
Or the two is mixed.By returning to boiler water system with the water at low temperature after cooling water system heat exchange, restart to follow
Ring.
As one preferred embodiment, the hot water outlet of hot-tub 2 has outdoor heat exchanger 12 or heat with pipeline communication
Water TRT or funnel-shaped TRT.After cooling water is heated to the highest temperature by thermal source 19, can be with water or saturated vapor
Form to boiler itself water heating, with reduce loss to greatest extent；Unserviceable hot water can be sent to outdoor heat exchanger
12 or funnel-shaped TRT, fully to recover energy.
As one preferred embodiment, the first final stage is evaporated under reduced pressure the low temperature water out of device 5 by for generating
Hot-tub 2 is communicated to after the water treatment system of deionized water.When cooling water inflow is fewer, can all using deionized water；It is cold
If but water is especially more, for being heated and flow into the part cooling water of hot-tub 2, first gone before high temperature is heated to from
In subprocessing, or the cooling water system, cooling heat exchanger is divided into two parts, and a part is using common cooling water, and another portion
Divide and use deionized water, heated is the cooling water of deionized water part.
As one preferred embodiment, the steam (vapor) outlet 14 of intermediate relief vaporising device 4 is also with pipeline communication to
One final stage is evaporated under reduced pressure device 5, the second final stage and device 8 and vacuum evaporator 1 is evaporated under reduced pressure.Vacuum evaporator 1 is worked
The jetting steam caused initial stage needed in journey needs outside offer, later stage, after stepped reduction vaporization device normal work, by each
Steam is evaporated under reduced pressure and provides that this is jetting steam caused, the steam or the vacuum evaporation for vacuumizing and final stage are evaporated under reduced pressure device lifting
The pressure of exhaust steam, or for vacuum evaporator 1 absorption weak solution solvent evaporation.
As one preferred embodiment, the first primary reduction vaporization device 3, the end of intermediate relief vaporising device 4, first
It is flash tank that level is evaporated under reduced pressure the primary device 7 that is evaporated under reduced pressure of device 5, second, and it is dilatation tank that the second final stage is evaporated under reduced pressure device 8.
First heating passage 20 heats the cooling water for obtaining high temperature by a series of reduction vaporization, and reduction vaporization each time is all separated
Go out high-temperature steam and water, high-temperature steam is used for heating cooling water by the second heating passage 21, and the water isolated is used for next stage
It is evaporated under reduced pressure；Flash tank, exhaust steam pressure is lifted with high steam by steam jet pump, is then heated to cooling water, and final
The water at low temperature for cooling down mixes with hot water, thermal source 19 is sent to again and is heated, after repeatedly heating repeatedly, if water at low temperature
Ion concentration reaches to a certain degree, then be sent to water treatment system, regenerates deionized water.
Specifically, as shown in Fig. 2 flash tank or dilatation tank include tank body 13 and the steam (vapor) outlet being arranged on tank body 13
14th, the delivery port 17 of hot water inlet 15, pressure sensor 16 and separation water outlet, the first quarter stream device 18 of hot water inlet 15 is communicated to
In tank body 13.In the case where pressure sensor 16 confirms to ensure that pressure is constant, the cooling for spraying into is adjusted by throttling arrangement 18
The amount of flow and the steam discharge of water backwater realizes energy transfer control, so that at different levels be evaporated under reduced pressure the steam temperature that device is produced
Degree, hot water amount are most reasonable.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (6)
1. cooling water energy saving circulating system, it is characterised in that：Including being sequentially communicated with pipeline for being passed through cooling water backwater
Vacuum evaporator, for being passed through the hot-tub of cooling water backwater, thermal source, first primary being evaporated under reduced pressure in device, at least one
Between device and the first final stage be evaporated under reduced pressure be evaporated under reduced pressure device, the first final stage is evaporated under reduced pressure the water at low temperature outlet of device to heat
On pipeline between pond and thermal source；The steam (vapor) outlet of intermediate relief vaporising device has been sequentially communicated first level hot water with pipeline
Pond, the second primary device, the second final stage of being evaporated under reduced pressure are evaporated under reduced pressure device, and the second final stage is evaporated under reduced pressure the low temperature water out of device
It is communicated to vacuum evaporator；First final stage is evaporated under reduced pressure device has second subprime hot-tub with pipeline communication, the second subprime
The hot water outlet of hot-tub is communicated to first level hot-tub；The hot water outlet of hot-tub is with pipeline communication to second subprime hot water
Pond；The low temperature water out of vacuum evaporator has the water cooling pond for supplying cooling water with pipeline communication；First level hot-tub
Hot water outlet have a third time level hot-tub with pipeline communication, the first primary steam (vapor) outlet that device is evaporated under reduced pressure by pipeline with
The third time level hot-tub is connected.
2. cooling water energy saving circulating system according to claim 1, it is characterised in that：The hot water outlet of hot-tub is with pipeline
It is communicated with outdoor heat exchanger or hot water electric generating apparatus or funnel-shaped TRT.
3. cooling water energy saving circulating system according to claim 1, it is characterised in that：First final stage is evaporated under reduced pressure device
Low temperature water out is communicated to hot-tub after for the water treatment system for generating deionized water.
4. cooling water energy saving circulating system according to claim 1, it is characterised in that：The steam of intermediate relief vaporising device
Outlet is also evaporated under reduced pressure device, the second final stage and device and vacuum evaporator is evaporated under reduced pressure with pipeline communication to the first final stage.
5. the cooling water energy saving circulating system according to any one of Claims 1 to 4, it is characterised in that：First primary decompression
It is flash tank that vaporising device, intermediate relief vaporising device, the first final stage are evaporated under reduced pressure device, the second primary device that is evaporated under reduced pressure,
It is dilatation tank that second final stage is evaporated under reduced pressure device.
6. cooling water energy saving circulating system according to claim 5, it is characterised in that：Flash tank or dilatation tank include tank
Body and the delivery port of the steam (vapor) outlet being arranged on tank body, hot water inlet, pressure sensor and separation water outlet, hot water inlet is through one
Throttling arrangement is communicated in tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259938.XA CN104864659B (en) | 2015-05-20 | 2015-05-20 | Cooling water energy saving circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510259938.XA CN104864659B (en) | 2015-05-20 | 2015-05-20 | Cooling water energy saving circulating system |
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| Publication Number | Publication Date |
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| CN104864659A CN104864659A (en) | 2015-08-26 |
| CN104864659B true CN104864659B (en) | 2017-06-30 |
Family
ID=53910669
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510259938.XA Active CN104864659B (en) | 2015-05-20 | 2015-05-20 | Cooling water energy saving circulating system |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5449655A (en) * | 1977-09-27 | 1979-04-19 | Toshiba Corp | Cooling apparatus |
| JP2905443B2 (en) * | 1996-06-14 | 1999-06-14 | オリオン機械株式会社 | Cooling device with water tank |
| CN202734381U (en) * | 2012-08-31 | 2013-02-13 | 浙江科维节能技术股份有限公司 | System for reducing energy consumption of circulating water pump |
| CN203036937U (en) * | 2012-12-27 | 2013-07-03 | 昊华工程有限公司 | Closed low-temperature cooling water circulating system |
| CN203443220U (en) * | 2013-07-22 | 2014-02-19 | 上海宝绿包装材料科技有限公司 | Circulating water multi-stage cooling system |
| CN203704492U (en) * | 2013-12-20 | 2014-07-09 | 江苏和丰制铁新材料科技有限公司 | Automatic circulating water cooling system |
| CN204165312U (en) * | 2014-08-29 | 2015-02-18 | 天津阿奇森环保技术有限公司 | A kind of circulation |
| CN104478137A (en) * | 2014-12-18 | 2015-04-01 | 中国第一重型机械股份公司 | Energy-saving recycling combination system for industrial circulating cooling water |
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2015
- 2015-05-20 CN CN201510259938.XA patent/CN104864659B/en active Active
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Effective date of registration: 20180928 Address after: 221699 Zhang Lianglu, Peixian Economic Development Zone, Xuzhou, Jiangsu Patentee after: Jiangsu Qiyan Pumps Co., Ltd. Address before: 101100 No. 9 building, Huaxing garden, Yang Zhuang Road, Tongzhou District, Beijing 451 Patentee before: Zheng Chengxun |